Does anyone own a Sams guitar?
yes it does you really need to have the right strings for your guitar depending on what type it is If you own an acoustic guitar, you need "acoustic guitar strings". If you own a classical guitar, you need "classical guitar strings" or "nylon strings". An electric guitar needs "electric guitar strings". And a bass guitar needs "bass guitar strings".
When you are referring to two people named Sam, the plural form is Sams, the plural possessive form is Sams'; for example: The two Sams' desks are next to each other. If you are referring to someone with the name Sams. Sams Smith, or Sams Benson. Sams could be a name, but it is more likely that you want to write Sam's. Sam's pen is blue. John's pen is black. Roberta's pen is orange.